Doctor Popular writes:

Here are my newest iPhone cases made from recycled items. I do alterations for a high end denim shop in SF called Self
Edge, instead of throwing away the scraps I try to recycle them into wallets and coffee cozies.
The denim for this particular iPhone case came from a pair of Nudie Jeans and the cool packaging that Nudie ships their underwear in.
When it’s closed the headphone cable can remain plugged in and the phones speaker is left uncovered so you can still hear the ringer.
These cases also fit Blackberries and iPod touches perfectly.

Recycled denim gadget cases – Link.